Some people are always closing their handsets , so it's difficult to inform them .   Why not send them short messages ?   Can short messages reach them ?   Short messages will be kept in the short messages center . Once they open the handsets they will receive them , which is better than you can't find them .   Why haven't I thought of this skill ?   I use short messages quite a lot . If it's not too complicated I will send a short message , which can save much phone charge .   I am informed that many people used short messages to pay a New Year call , and only on the Spring Festival it amounted to 1 billion this year , didn't it ?   I almost can't live without messages , from which I learn about weather forecasts and stock quotations . 